Improvement in seeding-machines



1. H. el J'. w.. THoMAs.

Seeding-Machines.

No.l52,706. Patented1une30',1z4.

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UNITED STATES JOHN H. THOMAS AND JOSEPH W.

P Arnlvct OFFICE.

' rHOMAs, OF SPRING-FIELD, OHIO.

IMPROVEMENT IN SEEDING-MACHINES.

Specification forming part of Letters Patent No. 152,706, dated June 30, 1374; application filed 1 April B, 1874.

To all whom t may concern:

Be it known that we, JOHN H. THOMAS and JOSEPH W. THOMAS, of Springfield, in the county of Clarke and State of Ohio, have invented a new and useful Improvement in Seeding-Machines; and we do hereby declare that thefollowing is a speciiication of the same.

This invention relates to the dragbars and shovel-standards of broadcast seeders; and consists mainly in the manner of attaching the standards to the drag-bars.

In the annexed drawings, Figure I is a perspective view of a drag-bar. Fig. II is an elevation of the same, partly in section.

The same letters in both figures indicate identical parts.

A is a wooden bar, having a hole bored through it at A1, to receive a round rod attached to the frame Of the machine. In order to 1n aintain drag-bars of this construction at their proper spaces apart, we attach the braces B B on each side, extending so far as may be necessary, and attached in like manner to the round rod. The barAis also cut so as to leave a slit in the rear end, as at A2, to receive the shank of the shovels O. These are forged to the form clearly shown in the drawings, and secured in the slit by the bolt D. Another threaded bolt, E, is passed through the bar A, as shown, in such place as to sustain the shovel when in proper position. The ends of the bifurcated barare then drawn down by the bolt E, or by the united action of the bolts E and D, until clamped against the standard of the shovel with such force that the friction shall maintain the shovel in position while passing through mellow earth, but not so tight but that it will yield to an excessive resistance before force enough is applied to break the shovel.

IVe are aware that bifurcated wooden drag-n bars have heretofore been clamped on the head of the standard for this purpose; but a much greater force must be applied to prevent it from turning on a center than is required with equal surface to prevent the standard from sliding endwise through the gripe.

By the form given to the standard we obtain not only the gripe on the pivoted end, but also a gripe against the sides of the standard, so that from its form it must be moved in the direction of its length; a much less restraining force will then hold the standard with requisite tenacity.

Te are aware, however, that the principle of so applying the gripe on cultivator-teeth as that the friction shall act on a part drawn lengthwise has been heretofore utilized in the Oase of cultivatenteeth having a curved arm attached to the standard, which extended between surfaces, by whicli it could be griped. Our device has its distinguishing feature in that construction, as shown, by which the shank is itself so bent as to give elfect to the double action of the joint at the eye and the compressing bolt E. By making it in one piece, its construction is greatly cheapened, as compared with that class when an :arm has to be welded onto the shank.

What we claim as our invention, and desire to secure by Letters Patent, is-

In combination with the drag-bar A, bifurcated at A2, the curved shovel-standard C, bent as shown, and pivoted by a bolt at D, and clamped by bolt E, substantially as shown and described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN H. THOMAS. JOSEPH V. THOMAS.

Witnesses A. P. LINN COCHRAN, JAs. S. BOGLE. 

